从炼厂产生的工业废水中有效地去除,使用化学沉和氧化辅助
Yeon-Jin Lee1, Chang-Gu Lee2, Kyung Jin Min3
1Department of Bioresources and Rural System Engineering, Hankyong National University, Anseong, South Korea.
概括
化学沉有效地从炼废水中去除99.9%以上的 (Cd),使用氧化 (CaO),氧化 (NaOH) 和氧化 (Ca(OH) 2). 即使在低速度下,NaOH也是有效的,NaOCl提高了Ca (OH) 2的性能.
科学领域:
- 环境化学环境化学
- 工业废水处理 工业废水处理
- 化学工程是化学工程的重要组成部分.
背景情况:
- 工业炼废水中的 (Cd) 污染对环境和健康构成重大风险.
- 有效的处理方法对于减轻工业过程中重金属的影响至关重要.
研究的目的:
- 研究如何有效地从真正的工业炼废水中去除.
- 评估不同沉剂,条件和甲 (NaOCl) 对去除效率和pH的影响.
- 分析由此产生的污泥的特性,以经济和环境的可持续性.
主要方法:
- 使用各种沉物 (CaO,NaOH,Ca(OH) 2) 对化学沉的实验研究.
- 振动强度对去除的影响的评估.
- 增加2%的NaOCl对去除效率的评估.
- 分析污泥特性,包括含水量,颗粒大小和浸出.
主要成果:
- 通过有效提高废水pH值,CaO,NaOH和Ca(OH) 2实现了高去除率 (>99.9%).
- 即使在低动条件下,NaOH也表现出高的去除效率.
- 添加2%的NaOCl提高了Ca(OH) 2的去除效率,这表明潜在的成本降低.
结论:
- 使用CaO,NaOH和Ca(OH) 2进行化学沉是一种高效的方法,可以从炼废水中去除.
- 优化条件,包括使用NaOH和NaOCl,可以提高处理效率和经济可行性.
- 该研究为污染的工业废水的可持续和经济有效管理提供了宝贵的见解.
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